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transmission

American  
[trans-mish-uhn, tranz-] / trænsˈmɪʃ ən, trænz- /

noun

  1. the act or process of transmitting.

    Synonyms:
    conveyance, passing, passage, transfer
  2. the fact of being transmitted.

    Synonyms:
    conveyance, passing, passage, transfer
  3. something that is transmitted.

  4. Machinery.

    1. transference of force between machines or mechanisms, often with changes of torque and speed.

    2. a compact, enclosed unit of gears or the like for this purpose, as in an automobile.

  5. Radio and Television. the broadcasting of electromagnetic waves from one location to another, as from a transmitter to a receiver.

  6. Physics. transmittance.


transmission British  
/ trænzˈmɪʃən /

noun

  1. the act or process of transmitting

  2. something that is transmitted

  3. the extent to which a body or medium transmits light, sound, or some other form of energy

  4. the transference of motive force or power

  5. a system of shafts, gears, torque converters, etc, that transmits power, esp the arrangement of such parts that transmits the power of the engine to the driving wheels of a motor vehicle

  6. the act or process of sending a message, picture, or other information from one location to one or more other locations by means of radio waves, electrical signals, light signals, etc

  7. a radio or television broadcast

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of transmission

1605–15; < Latin trānsmissiōn- (stem of trānsmissiō ) a sending across, equivalent to trānsmiss ( us ) (past participle of trānsmittere to send across) + -iōn- -ion. See trans-, mission

Explanation

Transmission is the act of transferring something from one spot to another, like a radio or TV broadcast, or a disease going from one person to another. The noun transmission comes from the Latin word transmissio, which means “sending over or across, passage.” The transmission of a message is the delivery of the message. Transmission can also be a communication sent out by radio or television, while the transmission of a disease is the passing of that virus or bacteria between people. A vehicle’s transmission is the part of the engine that uses the energy created by the burning fuel to make the axle turn.

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Vocabulary lists containing transmission

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"Early delays in detecting cases, isolating patients and engaging communities can allow transmission chains to expand very quickly."

From BBC • May 22, 2026

With no treatments or vaccines available, finding contacts and isolating them for 21 days was the only way to disrupt transmission, she said.

From Barron's • May 22, 2026

To investigate the atmosphere of TOI-199b, researchers used a method called transmission spectroscopy.

From Science Daily • May 22, 2026

And then there are the high-voltage transmission lines that buzz above the preserve.

From Los Angeles Times • May 19, 2026

The rest of the transmission was in German.

From "Code Name Verity" by Elizabeth Wein

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